PTH and hyperparathyroidism: This something is possibly PTH suppression11 inasmuch as PTH is proposed to affect FGF23 concentration in serum and calvarium in a mouse model of hyperparathyroidism,15 although the intact FGF23 molecule is rapidly degraded, as shown in a more recent mouse model.16 Others, however, have concluded that it is not PTH but 1,25‐dihydroxyvitamin D that stimulates FGF23 production,17 whereas still others feel that PTH suppresses FGF23 production, at least acutely.18 It is not certain if any of these models are appropriate for the study of pediatric burns.